怎样去除Javascript产生的广告条？

其代码为
</SCRIPT></FORM>
<SCRIPT LANGUAGE="JavaScript" SRC="http://bess-proxy3.macomb.k12.mi.us/s560/functions.js"></SCRIPT>
<SCRIPT LANGUAGE="JavaScript" SRC="http://bess-proxy3.macomb.k12.mi.us/s560/trailer1.js"></SCRIPT>
<SCRIPT LANGUAGE="JavaScript" SRC="http://bess-proxy3.macomb.k12.mi.us/s560/smart.js"></SCRIPT>
<NOSCRIPT>
<BR CLEAR="all"><CENTER>
<IMG SRC="http://adserve.bess.net/trailer_pixel/pid=s560-03&encarta=1" HEIGHT="1" WIDTH="1">
 <TABLE ALIGN="center" CELLPADDING="0" CELLSPACING="0" BORDER="0" WIDTH="600">
  <TR>
   <TD WIDTH="600" BGCOLOR="#FFCC00" COLSPAN="2">
<IMG SRC="http://bess-proxy3.macomb.k12.mi.us/s560/clear.gif" WIDTH="1" HEIGHT="5" BORDER="0"></TD></TR>
  <TR>
   <TD WIDTH="124">

    <IMG SRC="http://bess-proxy3.macomb.k12.mi.us/s560/n2h2_logo.gif" WIDTH="124" HEIGHT="45" BORDER="0" ALT="N2H2."></TD>
   <TD WIDTH="476" ROWSPAN="2" VALIGN="top">
    
     <TABLE WIDTH="476" CELLPADDING="0" CELLSPACING="0" BORDER="0">
      <TR>
       <TD WIDTH="476">
           
    <TABLE WIDTH="476" CELLPADDING="0" CELLSPACING="0" BORDER="0">
      <TR>
         <TD WIDTH="158">
      <A HREF="javascript:void(0)" onClick="bessBar_imgOn ('bessBar_education_web'); bessBar_imgOff ('bessBar_encarta'); bessBar_imgOff ('bessBar_the_internet'); bessBar_set_engine ('educationweb'); return (false);">
<IMG SRC="http://bess-proxy3.macomb.k12.mi.us/s560/education_web_on.gif" WIDTH="158" HEIGHT="19" BORDER="0" NAME="bessBar_education_web" ALT="Education Web."></A></TD>
 <TD WIDTH="126">
<A HREF="javascript:void(0)" onClick="bessBar_imgOn ('bessBar_encarta'); bessBar_imgOff ('bessBar_education_web'); bessBar_imgOff ('bessBar_the_internet'); bessBar_set_engine ('encarta'); return (false);">
      <IMG SRC="http://bess-proxy3.macomb.k12.mi.us/s560/encarta_off.gif" WIDTH="126" HEIGHT="19" BORDER="0" NAME="bessBar_encarta" ALT="Encarta."></A></TD>
 <TD WIDTH="192">
 <A HREF="javascript:void(0)" onClick="bessBar_imgOn ('bessBar_the_internet'); bessBar_imgOff ('bessBar_education_web'); bessBar_imgOff ('bessBar_encarta'); bessBar_set_engine ('searchopolis'); return (false);">
     <IMG SRC="http://bess-proxy3.macomb.k12.mi.us/s560/the_internet_off.gif" WIDTH="192" HEIGHT="19" BORDER="0" NAME="bessBar_the_internet" ALT="The Internet."></A></TD>
</TR></TABLE></TD></TR>
<TR>
   <TD WIDTH="476">
    
 <TABLE WIDTH="476" CELLPADDING="0" CELLSPACING="0" BORDER="0">
  <TR>
   <TD WIDTH="12">
    <IMG SRC="http://bess-proxy3.macomb.k12.mi.us/s560/education_web_left_on.gif" WIDTH="12" HEIGHT="74" BORDER="0" NAME="bessBar_left"></TD>
   <TD>
    
 <TABLE WIDTH="443" CELLPADDING="0" CELLSPACING="0" BORDER="0" BGCOLOR="#CCCCCC">
  <TR>
   <TD COLSPAN="2" WIDTH="443">
    <IMG SRC="http://bess-proxy3.macomb.k12.mi.us/s560/education_web_top_on.gif" WIDTH="443" HEIGHT="11" BORDER="0" NAME="bessBar_top"></TD></TR>
  <TR>
   <TD WIDTH="146">
    <IMG SRC="http://bess-proxy3.macomb.k12.mi.us/s560/education_web_text_on.gif" WIDTH="146" HEIGHT="48" BORDER="0" NAME="bessBar_text" USEMAP="#bessBar_text"></TD>
   <TD WIDTH="297">
    
<TABLE WIDTH="297" CELLPADDING="0" CELLSPACING="0" BORDER="0" BGCOLOR="#CCCCCC">
 <TR>
  <TD WIDTH="243" VALIGN="middle" ALIGN="center">
   <FORM ACTION="http://cgi.searchopolis.com/cgi-bin/esearch" NAME="bess_search" METHOD="get" TARGET="_top">
<INPUT TYPE="hidden" NAME="firstResult" VALUE="0">
<INPUT TYPE="hidden" NAME="displayfirstResult" VALUE="1">
<INPUT TYPE="hidden" NAME="bess_partner" VALUE="1">
<INPUT TYPE="hidden" NAME="engine" VALUE="educationweb">
<FONT FACE="helvetica" SIZE="-2">
<INPUT TYPE="text" MAXLENGTH="256" NAME="request" SIZE="20"></FONT></TD>
      <TD WIDTH="54" VALIGN="top">
<INPUT TYPE="image" SRC="http://bess-proxy3.macomb.k12.mi.us/s560/go.gif" WIDTH="54" HEIGHT="29" BORDER="0" ALT="Go."></TD></TR>
 <TR>
  <TD COLSPAN="2" ALIGN="center" VALIGN="bottom">
   </FORM>
<IMG SRC="http://bess-proxy3.macomb.k12.mi.us/s560/form_text.gif" WIDTH="211" HEIGHT="11" USEMAP="#bessBar_form_text" BORDER="0"></TD></TR></TABLE></TD></TR>
  <TR>
   <TD COLSPAN="2" WIDTH="443">
    <IMG SRC="http://bess-proxy3.macomb.k12.mi.us/s560/education_web_bottom_on.gif" WIDTH="443" HEIGHT="15" BORDER="0" NAME="bessBar_bottom"></TD></TR></TABLE></TD>
   <TD WIDTH="21">
    <IMG SRC="http://bess-proxy3.macomb.k12.mi.us/s560/education_web_right_on.gif" WIDTH="21" HEIGHT="74" BORDER="0" NAME="bessBar_right"></TD></TR></TABLE></TD></TR></TABLE></TD></TR>
   <TD WIDTH="124">
 <TABLE WIDTH="124" CELLPADDING="0" CELLSPACING="0" BORDER="0">
  <TR>
   <TD>
<A HREF="http://bess-proxy3.macomb.k12.mi.us/cgi-bin/s560/hidetrailer.pl" TARGET="_top">
    <IMG SRC="http://bess-proxy3.macomb.k12.mi.us/s560/printable_version.gif" WIDTH="124" HEIGHT="9" BORDER="0" ALT="Printable Version."></A></TD></TR>
  <TR>
   <TD>
<A HREF="http://bess-proxy3.macomb.k12.mi.us/s560/policy.html" TARGET="_top">
    <IMG SRC="http://bess-proxy3.macomb.k12.mi.us/s560/policies.gif" WIDTH="124" HEIGHT="12" BORDER="0" ALT="View Filtering Policies."></A></TD></TR>
  <TR>
   <TD>
<A HREF="http://bess-proxy3.macomb.k12.mi.us/cgi-bin/s560/authorized/Create-Block-Request?block=1" TARGET="_top">
    <IMG SRC="http://bess-proxy3.macomb.k12.mi.us/s560/request_review.gif" WIDTH="124" HEIGHT="12" BORDER="0" ALT="Request Review."></A></TD></TR>
  <TR>
   <TD>
    <IMG SRC="http://bess-proxy3.macomb.k12.mi.us/s560/restore_filter_off.gif" WIDTH="124" HEIGHT="15" BORDER="0" ALT=""></TD></TR></TABLE></TD></TR>
<TR>
 <TD ALIGN="center" BGCOLOR="#FFCC00" COLSPAN="2">
</TD></TR></TABLE>
 </TD>
</TR>
</TABLE>
</CENTER>
<MAP NAME="bessBar_text">
<AREA SHAPE="circle" COORDS="8,8,11" onClick="bessBar_openWindowHelp();return (false);" HREF="javascript:void(0)" ALT="Help." TARGET="_top">
</MAP>
<MAP NAME="bessBar_form_text">
<AREA SHAPE="rect" COORDS="29,0,100,9", HREF="http://www.searchopolis.com/" ALT="Go to Searchopolis." TARGET="_top">
</MAP>
</NOSCRIPT>
</NOSCRIPT>